Protect access to pin code setting, and so remove protection to disable the pin code

vector/src/main/java/im/vector/app/features/pin/PinFragment.kt

@@ -55,54 +55,10 @@ class PinFragment @Inject constructor(
         super.onViewCreated(view, savedInstanceState)
         when (fragmentArgs.pinMode) {
             PinMode.CREATE -> showCreateFragment()
-            PinMode.DELETE -> showDeleteFragment()
             PinMode.AUTH   -> showAuthFragment()
         }
     }
 
-    private fun showDeleteFragment() {
-        val encodedPin = pinCodeStore.getEncodedPin() ?: return
-        val authFragment = PFLockScreenFragment()
-        val builder = PFFLockScreenConfiguration.Builder(requireContext())
-                .setUseBiometric(vectorPreferences.useBiometricsToUnlock() && pinCodeStore.getRemainingBiometricsAttemptsNumber() > 0)
-                .setTitle(getString(R.string.auth_pin_confirm_to_disable_title))
-                .setClearCodeOnError(true)
-                .setMode(PFFLockScreenConfiguration.MODE_AUTH)
-        authFragment.setConfiguration(builder.build())
-        authFragment.setEncodedPinCode(encodedPin)
-        authFragment.setLoginListener(object : PFLockScreenFragment.OnPFLockScreenLoginListener {
-            override fun onPinLoginFailed() {
-                onWrongPin()
-            }
-
-            override fun onBiometricAuthSuccessful() {
-                lifecycleScope.launch {
-                    pinCodeStore.deleteEncodedPin()
-                    vectorBaseActivity.setResult(Activity.RESULT_OK)
-                    vectorBaseActivity.finish()
-                }
-            }
-
-            override fun onBiometricAuthLoginFailed() {
-                val remainingAttempts = pinCodeStore.onWrongBiometrics()
-                if (remainingAttempts <= 0) {
-                    // Disable Biometrics
-                    builder.setUseBiometric(false)
-                    authFragment.setConfiguration(builder.build())
-                }
-            }
-
-            override fun onCodeInputSuccessful() {
-                lifecycleScope.launch {
-                    pinCodeStore.deleteEncodedPin()
-                    vectorBaseActivity.setResult(Activity.RESULT_OK)
-                    vectorBaseActivity.finish()
-                }
-            }
-        })
-        replaceFragment(R.id.pinFragmentContainer, authFragment)
-    }
-
     private fun showCreateFragment() {
         val createFragment = PFLockScreenFragment()
         val builder = PFFLockScreenConfiguration.Builder(requireContext())

vector/src/main/java/im/vector/app/features/pin/PinMode.kt

@@ -18,6 +18,5 @@ package im.vector.app.features.pin
 
 enum class PinMode {
     CREATE,
-    DELETE,
     AUTH
 }

vector/src/main/java/im/vector/app/features/settings/VectorSettingsPinFragment.kt

@@ -24,12 +24,11 @@ import im.vector.app.R
 import im.vector.app.features.navigation.Navigator
 import im.vector.app.features.pin.PinActivity
 import im.vector.app.features.pin.PinCodeStore
-import im.vector.app.features.pin.PinLocker
 import im.vector.app.features.pin.PinMode
+import kotlinx.coroutines.launch
 import javax.inject.Inject
 
 class VectorSettingsPinFragment @Inject constructor(
-        private val pinLocker: PinLocker,
         private val pinCodeStore: PinCodeStore,
         private val navigator: Navigator
 ) : VectorSettingsBaseFragment() {
@@ -50,12 +49,14 @@ class VectorSettingsPinFragment @Inject constructor(
             val hasPinCode = pinCodeStore.hasEncodedPin()
             usePinCodePref.isChecked = hasPinCode
             usePinCodePref.onPreferenceClickListener = Preference.OnPreferenceClickListener {
-                val pinMode = if (hasPinCode) {
-                    PinMode.DELETE
-                } else {
-                    PinMode.CREATE
+                if (hasPinCode) {
+                    lifecycleScope.launch {
+                        pinCodeStore.deleteEncodedPin()
+                        refreshPinCodeStatus()
+                    }
+                } else {
+                    navigator.openPinCode(this@VectorSettingsPinFragment, PinMode.CREATE)
                 }
-                navigator.openPinCode(this@VectorSettingsPinFragment, pinMode)
                 true
             }
         }
@@ -64,7 +65,6 @@ class VectorSettingsPinFragment @Inject constructor(
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
         super.onActivityResult(requestCode, resultCode, data)
         if (requestCode == PinActivity.PIN_REQUEST_CODE) {
-            pinLocker.unlock()
             refreshPinCodeStatus()
         }
     }

vector/src/main/java/im/vector/app/features/settings/VectorSettingsSecurityPrivacyFragment.kt

@@ -29,6 +29,7 @@ import android.widget.TextView
 import androidx.appcompat.app.AlertDialog
 import androidx.core.content.ContextCompat
 import androidx.core.view.isVisible
+import androidx.lifecycle.lifecycleScope
 import androidx.preference.Preference
 import androidx.preference.PreferenceCategory
 import androidx.preference.SwitchPreference
@@ -52,6 +53,11 @@ import im.vector.app.features.crypto.keys.KeysExporter
 import im.vector.app.features.crypto.keys.KeysImporter
 import im.vector.app.features.crypto.keysbackup.settings.KeysBackupManageActivity
 import im.vector.app.features.crypto.recover.BootstrapBottomSheet
+import im.vector.app.features.navigation.Navigator
+import im.vector.app.features.pin.PinActivity
+import im.vector.app.features.pin.PinCodeStore
+import im.vector.app.features.pin.PinLocker
+import im.vector.app.features.pin.PinMode
 import im.vector.app.features.raw.wellknown.ElementWellKnownMapper
 import im.vector.app.features.raw.wellknown.isE2EByDefault
 import im.vector.app.features.themes.ThemeUtils
@@ -70,7 +76,9 @@ import javax.inject.Inject
 
 class VectorSettingsSecurityPrivacyFragment @Inject constructor(
         private val vectorPreferences: VectorPreferences,
-        private val activeSessionHolder: ActiveSessionHolder
+        private val activeSessionHolder: ActiveSessionHolder,
+        private val pinCodeStore: PinCodeStore,
+        private val navigator: Navigator
 ) : VectorSettingsBaseFragment() {
 
     override var titleRes = R.string.settings_security_and_privacy
@@ -119,6 +127,10 @@ class VectorSettingsSecurityPrivacyFragment @Inject constructor(
         findPreference<SwitchPreference>(VectorPreferences.SETTINGS_ENCRYPTION_NEVER_SENT_TO_PREFERENCE_KEY)!!
     }
 
+    private val openPinCodeSettingsPref by lazy {
+        findPreference<VectorPreference>("SETTINGS_SECURITY_PIN")!!
+    }
+
     override fun onCreateRecyclerView(inflater: LayoutInflater?, parent: ViewGroup?, savedInstanceState: Bundle?): RecyclerView {
         return super.onCreateRecyclerView(inflater, parent, savedInstanceState).also {
             // Insert animation are really annoying the first time the list is shown
@@ -252,6 +264,11 @@ class VectorSettingsSecurityPrivacyFragment @Inject constructor(
             }
         }
 
+        openPinCodeSettingsPref.setOnPreferenceClickListener {
+            openPinCodePreferenceScreen()
+            true
+        }
+
         refreshXSigningStatus()
 
         secureBackupPreference.icon = activity?.let {
@@ -336,6 +353,8 @@ class VectorSettingsSecurityPrivacyFragment @Inject constructor(
                     })
                 }
             }
+        } else if (requestCode == PinActivity.PIN_REQUEST_CODE) {
+            doOpenPinCodePreferenceScreen()
         } else if (requestCode == REQUEST_E2E_FILE_REQUEST_CODE) {
             if (resultCode == Activity.RESULT_OK) {
                 importKeys(data)
@@ -343,6 +362,26 @@ class VectorSettingsSecurityPrivacyFragment @Inject constructor(
         }
     }
 
+    private fun openPinCodePreferenceScreen() {
+        lifecycleScope.launchWhenResumed {
+            val hasPinCode = pinCodeStore.hasEncodedPin()
+            if (hasPinCode) {
+                navigator.openPinCode(this@VectorSettingsSecurityPrivacyFragment, PinMode.AUTH)
+            } else {
+                doOpenPinCodePreferenceScreen()
+            }
+        }
+    }
+
+    private fun doOpenPinCodePreferenceScreen() {
+        // TODO Avoid duplication of this code. Move it to Activity
+        parentFragmentManager.beginTransaction()
+                .setCustomAnimations(R.anim.anim_slide_in_bottom, R.anim.anim_slide_out_bottom, R.anim.anim_slide_in_bottom, R.anim.anim_slide_out_bottom)
+                .replace(R.id.vector_settings_page, VectorSettingsPinFragment::class.java, null)
+                .addToBackStack(null)
+                .commit()
+    }
+
     private fun refreshKeysManagementSection() {
         // If crypto is not enabled parent section will be removed
         // TODO notice that this will not work when no network

vector/src/main/res/xml/vector_settings_security_privacy.xml

@@ -120,9 +120,8 @@
         <im.vector.app.core.preference.VectorPreference
             android:key="SETTINGS_SECURITY_PIN"
             android:persistent="false"
-            android:title="@string/settings_security_application_protection_title"
             android:summary="@string/settings_security_application_protection_summary"
-            app:fragment="im.vector.app.features.settings.VectorSettingsPinFragment" />
+            android:title="@string/settings_security_application_protection_title" />
 
         <im.vector.app.core.preference.VectorSwitchPreference
             android:defaultValue="false"